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https://issues.apache.org/jira/browse/HIVE-13453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15772203#comment-15772203
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Lefty Leverenz commented on HIVE-13453:
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Thanks for the wiki documentation, [~aihuaxu].
* [Windowing and Analytics -- Enhancements to Hive QL -- 4. Distinct support in
Hive 2.1.0 and later |
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics#LanguageManualWindowingAndAnalytics-EnhancementstoHiveQL]
> Support ORDER BY and windowing clause in partitioning clause with distinct
> function
> -----------------------------------------------------------------------------------
>
> Key: HIVE-13453
> URL: https://issues.apache.org/jira/browse/HIVE-13453
> Project: Hive
> Issue Type: Sub-task
> Components: PTF-Windowing
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Fix For: 2.2.0
>
> Attachments: HIVE-13453.1.patch, HIVE-13453.2.patch,
> HIVE-13453.3.patch, HIVE-13453.4.patch
>
>
> Current distinct function on partitioning doesn't support order by and
> windowing clause due to performance reason. Explore an efficient way to
> support that.
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